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Key terms: berus pelias reuss cm mg adder var scales bites forma vipera berus venom females kg snake mate accessed jan prester dorsal sweden rows reptiles diet habitat adults rarely varies nomen nudum frontal golay et al subspecies keeled amphibians minton specimens great britain markings pelias berus melanistic european viper common european small scales conservation common names been observed type locality european adder ventral scales pelias occidentalis Search external links cited by footnotes on Wikipedia page Vipera berus: |
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